A man of mass 60 kg carrying a suit case on his head of mass 40 kg to the top of a building of height 20 m. Find the work done
by the man
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Answer:
19600 Joule
Explanation:
mass = 60+40= 100kg
force = mass × acceleration = 100 × 9.8 = 980 N
work done = force × distance
= 980×20= 19600joule
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